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Official torque specs thread

Old Sep 11, 2016, 11:07 AM
  #136  
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Originally Posted by MinusPrevious View Post
Its likely, Cosworth would refer all torque specs per the manufacturer

This was taken from the manual. 18ft lbs. Not sure what you meant by CR? Please double check this info


Thank you Minus Previous!
CR: Connecting Rod.
I wrote Cosworth and they do not supply any value, unbelievable!.. I guess manufacturer settings is a good start.
Cheers!
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Old Sep 11, 2016, 04:22 PM
  #137  
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Originally Posted by Vigman View Post
Thank you Minus Previous!
CR: Connecting Rod.
I wrote Cosworth and they do not supply any value, unbelievable!.. I guess manufacturer settings is a good start.
Cheers!
Yes, Connecting rod. Here it is if needed. Taken from EvO 9 manual


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Old Sep 11, 2016, 04:38 PM
  #138  
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Do not use the OEM connecting rod bolt torque spec on your cosworth rods. It will not work.

Also, if you bought main studs, do not use the torque specs for the OEM bolts.

The OEM bolts are torque to yield bolts. Hence the torque spec is XXft-lbs then an additional 90*. The manufacturer has to do a good amount of testing (with the bolt and the assembly) to come with a torque spec like that.

I find it quite deplorable that cosworth doesn't have torque specs for their parts. Do the heads of the rod bolts have markings on them?
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Old Feb 17, 2017, 01:07 AM
  #139  
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needed this info thanks
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Old Jun 12, 2017, 08:02 AM
  #140  
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Does anyone know if there is a torque spec for the oil passage plug on the back of the cylinder head just above the EGR port? Please see pic below for reference. I've skimmed the service manual, and tried a few searches here, but haven't had any luck finding the specifics on this little guy.

Thanks!
Attached Thumbnails Official torque specs thread-egrplug.jpg  
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Old Jun 12, 2017, 08:20 AM
  #141  
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It's pipe thread. Put thread sealant on it, and snug it up. It's not going to go anywhere, the threads are tapered, it basically wedges itself in place.
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Old Jun 13, 2017, 07:50 AM
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Got it taken care of last night. Thanks for the advice. Just wanted to double-check that there wasn't a factory spec anywhere.
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Old Jun 25, 2017, 01:47 AM
  #143  
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whats the torque settings for the flywheel on an evo 4? and the pressure plate to flywheel? thanks
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Old Jul 18, 2017, 10:38 PM
  #144  
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Huge thanks,
this helps tremendously. +Rep
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Old Sep 26, 2017, 07:45 PM
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Very helpful
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Old Jul 13, 2018, 07:21 PM
  #146  
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Anyone know the torque specs for turbo studs that connect to the exhaust manifold
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Old Jan 7, 2019, 03:19 PM
  #147  
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Difference in torque specs in the repair manual. I circled the fasteners in question.

The m8 manifold bolts are 22+-2 ft/lb on one, 24+-4 on other. M10 nuts 36+-4 on one, 41+-6 other. Not huge diff there.

Manifold to turbo bolts and nuts are 38+-3 one, 47+-3 the other, however Nm is the same at 64+-5 Nm. 64 Nm is 47 ft/lb.

I’m thinking the greater of the figures is the correct one as the fsm manifold torque sequence references the greater numbers also. Although 47ft/lb on the turbo bolts seems a little high, I always did around 40 I thought..



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Old Jan 7, 2019, 06:37 PM
  #148  
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You can't really "torque" the smaller manifold to head bolts with most aftermarket manifolds, so I just guess at 25ftlbs on those. The big ones on the manifold get 40ftlb. And on the stock frame stuff where I can use a torque wrong on the turbo to manifold bolts/studs, I do 48ftlb. Or in the case of basically any aftermarket mani, even stock frame stuff, they just get made tight because theres no torqueing them.
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Old Jan 8, 2019, 10:43 PM
  #149  
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Originally Posted by letsgetthisdone View Post
You can't really "torque" the smaller manifold to head bolts with most aftermarket manifolds, so I just guess at 25ftlbs on those. The big ones on the manifold get 40ftlb. And on the stock frame stuff where I can use a torque wrong on the turbo to manifold bolts/studs, I do 48ftlb. Or in the case of basically any aftermarket mani, even stock frame stuff, they just get made tight because theres no torqueing them.
Just weird the fsm has different specs, but they’re all close enough I guess like ya say. On the FP cast there’s about enough room to get a deep flank crowfoot on the top row. The bottom is fine. And I got a new made in Merica CDI torque wrench to use
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